七人一路险象环生，为了躲避巨兽的追击，一行人只能躲进丛林深处的研究所，并偶然得知，龙潭湖之所以有如此多的巨兽，全因人类妄图战胜所有的疾病，在研制新药的过程中不慎造成泄漏，污染了水源。In the near future, aliens have invaded Earth and declared a galactic war resulting in thousands of human casualties. To save Earth, a team of four teenage astronauts brave the alien wilderness of a distant planet to stop an assassin from changing the course of history forever.